{"id":244,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/sound-pressure-level\/"},"modified":"2026-05-23T22:31:25","modified_gmt":"2026-05-23T22:31:25","slug":"sound-pressure-level","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/pt\/glossary\/sound-pressure-level\/","title":{"rendered":"O que \u00e9 o n\u00edvel de press\u00e3o sonora? Medi\u00e7\u00e3o de ru\u00eddo"},"content":{"rendered":"<h1>Compreender o n\u00edvel de press\u00e3o sonora<\/h1>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-1\/\" title=\"Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A kit completo de balanceador port\u00e1til e analisador de vibra\u00e7\u00f5es\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-1\/\" title=\"Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es Balanset-1A\">Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es Balanset-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"Adiciona ao carrinho: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/vibration-sensor\/\" title=\"Sensor de vibra\u00e7\u00e3o\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Grande plano do sensor de vibra\u00e7\u00e3o Balanset-1A\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/vibration-sensor\/\" title=\"Sensor de vibra\u00e7\u00e3o\">Sensor de vibra\u00e7\u00e3o<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"Adiciona ao carrinho: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00f3tico (tac\u00f3metro laser)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Sensor \u00f3tico (tac\u00f3metro laser)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00f3tico (tac\u00f3metro laser)\">Sensor \u00f3tico (tac\u00f3metro laser)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"Adiciona ao carrinho: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Kit de balanceamento de rotor Vibromera: estojo de transporte, condicionador de sinal multicanal, analisador port\u00e1til, base magn\u00e9tica, sensores de vibra\u00e7\u00e3o e cabos espiralados.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"Adiciona ao carrinho: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/magnet-stand\/\" title=\"Suporte magn\u00e9tico Insize-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Base magn\u00e9tica.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/magnet-stand\/\" title=\"Suporte magn\u00e9tico Insize-60-kgf\">Suporte magn\u00e9tico Insize-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"Adiciona ao carrinho: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/reflective-tape\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/reflective-tape\/\" title=\"Fita refletora\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Fita refletora\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/reflective-tape\/\" title=\"Fita refletora\">Fita refletora<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"Adiciona ao carrinho: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/dynamic-balancer-balanset-1a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/dynamic-balancer-balanset-1a\/\" title=\"Balanceador din\u00e2mico &quot;Balanset-1A&quot; OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Conte\u00fado do kit Balanset-1A com unidade de interface, sensores, tac\u00f3metro e acess\u00f3rios\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1024x683.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1536x1024.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-2048x1366.webp 2048w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-e1732998877834.webp 708w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/dynamic-balancer-balanset-1a\/\" title=\"Balanceador din\u00e2mico &quot;Balanset-1A&quot; OEM\">Balanceador din\u00e2mico \"Balanset-1A\" OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/244?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"Adiciona ao carrinho: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p><strong>n\u00edvel de press\u00e3o sonora<\/strong> (SPL) \u00e9 a medida logar\u00edtmica da press\u00e3o ac\u00fastica em rela\u00e7\u00e3o a uma refer\u00eancia, expressa em decib\u00e9is (dB). No caso das m\u00e1quinas, quantifica a intensidade da emiss\u00e3o sonora \u2014 o volume irradiado por uma m\u00e1quina \u2014, medida com um microfone ou um son\u00f3metro a uma dist\u00e2ncia determinada. O SPL est\u00e1 intimamente ligado a <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/vibration\/\">vibra\u00e7\u00e3o<\/a>, uma vez que as superf\u00edcies vibrat\u00f3rias irradiam som, o que torna a medi\u00e7\u00e3o ac\u00fastica um complemento natural para <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/vibration-analysis\/\">an\u00e1lise de vibra\u00e7\u00e3o<\/a> para avaliar o estado da m\u00e1quina \u2014 especialmente no que diz respeito a falhas aerodin\u00e2micas, nas engrenagens e nos rolamentos que produzem sinais tonais ou de banda larga caracter\u00edsticos.<\/p>\n<p>Embora o SPL seja, essencialmente, um indicador de sa\u00fade ocupacional e ambiental \u2014 prote\u00e7\u00e3o auditiva, regulamenta\u00e7\u00e3o do ru\u00eddo, limites comunit\u00e1rios \u2014, tem um valor diagn\u00f3stico concreto. As altera\u00e7\u00f5es no ru\u00eddo precedem frequentemente ou acompanham a degrada\u00e7\u00e3o mec\u00e2nica, e um espectro ac\u00fastico permite identificar avarias espec\u00edficas atrav\u00e9s de padr\u00f5es de frequ\u00eancia que refletem os observados nas vibra\u00e7\u00f5es <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/spectrum\/\">espetro<\/a>.<\/p>\n<h2>1. A matem\u00e1tica: porqu\u00ea os decib\u00e9is?<\/h2>\n<p>O SPL \u00e9 definido como:<\/p>\n<blockquote><p><strong>SPL (dB) = 20 \u00d7 log\u2081\u2080(P \/ P\u2080)<\/strong>, em que P \u00e9 a press\u00e3o sonora medida em pascais e P\u2080 = 20 \u00b5Pa, a press\u00e3o de refer\u00eancia correspondente ao limiar da audi\u00e7\u00e3o humana.<\/p><\/blockquote>\n<p>O logaritmo existe por uma raz\u00e3o pr\u00e1tica: o ouvido lida com uma enorme amplitude de press\u00f5es \u2014 desde o som aud\u00edvel mais fraco at\u00e9 ao limiar da dor, abrangendo um fator de cerca de um milh\u00e3o na press\u00e3o. Uma escala logar\u00edtmica comprime essa amplitude para um intervalo mais f\u00e1cil de gerir, entre 0 e 120+ dB. Isso tamb\u00e9m explica a aritm\u00e9tica que surpreende os novatos: como a escala \u00e9 logar\u00edtmica, duplicar o som <em>pot\u00eancia<\/em> acrescenta apenas 3 dB, e duas m\u00e1quinas com o mesmo volume, quando combinadas, resultam num som 3 dB mais alto do que uma s\u00f3 \u2014 e n\u00e3o o dobro do volume. A combina\u00e7\u00e3o de fontes \u00e9, portanto, uma soma logar\u00edtmica, facilmente calcul\u00e1vel com o nosso <a href=\"https:\/\/vibromera.eu\/pt\/calculators\/noise-level-addition\/\">Calculadora de Adi\u00e7\u00e3o de N\u00edvel de Ru\u00eddo<\/a> ou convertida entre press\u00e3o e decib\u00e9is com o <a href=\"https:\/\/vibromera.eu\/pt\/calculators\/sound-level-converter\/\">Conversor de N\u00edvel de Som<\/a>.<\/p>\n<p>A t\u00edtulo de orienta\u00e7\u00e3o geral sobre a escala: 0 dB corresponde ao limiar da audi\u00e7\u00e3o; 30\u201340 dB a uma sala silenciosa; 60\u201370 dB a uma conversa normal; 80\u201390 dB a m\u00e1quinas ruidosas, em que se recomenda o uso de prote\u00e7\u00e3o auditiva; 100\u2013110 dB a m\u00e1quinas muito ruidosas, em que o uso de prote\u00e7\u00e3o auditiva \u00e9 obrigat\u00f3rio; e 120 dB e acima, ao limiar da dor, com risco de danos auditivos imediatos.<\/p>\n<h2>2. Como se mede o SPL<\/h2>\n<h3>Medidores de n\u00edvel sonoro<\/h3>\n<ul>\n<li>Um microfone de precis\u00e3o ligado a um medidor que aplica pondera\u00e7\u00e3o de frequ\u00eancia e pondera\u00e7\u00e3o temporal e apresenta o resultado em dB SPL.<\/li>\n<li>Os instrumentos s\u00e3o classificados como Classe 1 (precis\u00e3o) ou Classe 2 (uso geral) ao abrigo de <strong>IEC 61672<\/strong>.<\/li>\n<\/ul>\n<h3>Dist\u00e2ncia de medi\u00e7\u00e3o<\/h3>\n<ul>\n<li><strong>Campo pr\u00f3ximo:<\/strong> a menos de 1 m da fonte, \u00fatil para localizar um componente ruidoso.<\/li>\n<li><strong>Campo distante:<\/strong> para dist\u00e2ncias superiores a 1 m, onde se aplicam as condi\u00e7\u00f5es de campo livre; 1 m \u00e9 uma norma comum para m\u00e1quinas.<\/li>\n<li>Em campo aberto, o n\u00edvel de press\u00e3o sonora (SPL) diminui cerca de <strong>6 dB por cada duplica\u00e7\u00e3o da dist\u00e2ncia<\/strong> \u2014 a base do <a href=\"https:\/\/vibromera.eu\/pt\/calculators\/noise-distance-attenuation\/\">Calculadora de atenua\u00e7\u00e3o de ru\u00eddo \u00e0 dist\u00e2ncia<\/a>.<\/li>\n<\/ul>\n<h3>Pondera\u00e7\u00e3o de frequ\u00eancia<\/h3>\n<ul>\n<li><strong>Pondera\u00e7\u00e3o A (dBA):<\/strong> molda a resposta de modo a imitar a sensibilidade do ouvido; \u00e9, de longe, o m\u00e9todo mais comum para a avalia\u00e7\u00e3o do ru\u00eddo.<\/li>\n<li><strong>Pondera\u00e7\u00e3o C (dBC):<\/strong> relativamente plana, mantendo o conte\u00fado de baixa frequ\u00eancia para ru\u00eddos de pico e impulsivos.<\/li>\n<li><strong>Z \/ linear (dBZ):<\/strong> sem pondera\u00e7\u00e3o; todas as frequ\u00eancias t\u00eam o mesmo peso, sendo esta a op\u00e7\u00e3o preferida para an\u00e1lises de engenharia.<\/li>\n<\/ul>\n<h2>3. A rela\u00e7\u00e3o com a vibra\u00e7\u00e3o<\/h2>\n<h3>Radia\u00e7\u00e3o sonora proveniente de uma superf\u00edcie vibrat\u00f3ria<\/h3>\n<ul>\n<li>Uma superf\u00edcie vibrat\u00f3ria exerce press\u00e3o sobre o ar circundante e irradia ondas sonoras.<\/li>\n<li>A pot\u00eancia sonora irradiada aumenta aproximadamente com <strong>velocidade\u00b2 \u00d7 \u00e1rea<\/strong>, pelo que uma superf\u00edcie maior <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/velocity\/\">velocidade<\/a> significa, geralmente, um n\u00edvel de press\u00e3o sonora mais elevado.<\/li>\n<li>No entanto, a rela\u00e7\u00e3o n\u00e3o \u00e9 exata \u2014 a efici\u00eancia de radia\u00e7\u00e3o varia significativamente com a frequ\u00eancia e a geometria do painel, pelo que duas superf\u00edcies que vibram da mesma forma podem irradiar de forma muito diferente.<\/li>\n<\/ul>\n<h3>Correla\u00e7\u00e3o diagn\u00f3stica<\/h3>\n<ul>\n<li><strong>Problemas com os rolamentos:<\/strong> um chiado ou rangido agudo.<\/li>\n<li><strong>Problemas de engrenagem:<\/strong> um zumbido caracteristico na frequencia de engrenamento.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/unbalance\/\">Desequil\u00edbrio<\/a>:<\/strong> um ru\u00eddo grave de baixa frequ\u00eancia a 1\u00d7 <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/running-speed\/\">velocidade de funcionamento<\/a>.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/cavitation\/\">Cavita\u00e7\u00e3o<\/a>:<\/strong> estalos ou estalidos aleat\u00f3rios \u00e0 medida que as bolhas de vapor se rompem.<\/li>\n<\/ul>\n<h2>4. An\u00e1lise do espetro ac\u00fastico<\/h2>\n<p>Tal como acontece com a vibra\u00e7\u00e3o, a transforma\u00e7\u00e3o do sinal sonoro num espetro de frequ\u00eancias permite decompor um ru\u00eddo complexo em partes diagnostic\u00e1veis.<\/p>\n<h3>Componentes tonais<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/gear-mesh-frequency\/\">Engrenagem<\/a>:<\/strong> um tom puro na frequ\u00eancia de engate dos dentes, frequentemente com <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/sidebands\/\">faixas laterais<\/a>.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/blade-passing-frequency\/\">Passagem da l\u00e2mina<\/a>:<\/strong> um tom na frequ\u00eancia de passagem das p\u00e1s do ventilador ou do compressor.<\/li>\n<li><strong>El\u00e9trica:<\/strong> um zumbido de 120\/100 Hz proveniente dos motores, a uma frequ\u00eancia duas vezes superior \u00e0 da rede el\u00e9trica.<\/li>\n<li><strong>Tons de rolamentos:<\/strong> uma fam\u00edlia de <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/bearing-fault-frequencies\/\">frequ\u00eancia de avarias nos rolamentos<\/a> harm\u00f3nicas.<\/li>\n<\/ul>\n<h3>Ru\u00eddo de banda larga<\/h3>\n<ul>\n<li><strong>Aerodin\u00e2mico:<\/strong> turbul\u00eancia e ru\u00eddo do fluxo.<\/li>\n<li><strong>Cavita\u00e7\u00e3o:<\/strong> colapso aleat\u00f3rio de bolhas numa ampla faixa.<\/li>\n<li><strong>Danos na chumaceira:<\/strong> um aumento generalizado \u00e0 medida que as superf\u00edcies se deterioram.<\/li>\n<li><strong>Atrito:<\/strong> emiss\u00e3o aleat\u00f3ria cont\u00ednua.<\/li>\n<\/ul>\n<h2>5. Aplica\u00e7\u00f5es<\/h2>\n<p>A medi\u00e7\u00e3o do SPL tem a sua utilidade em quatro \u00e1reas pr\u00e1ticas:<\/p>\n<ul>\n<li><strong>Monitoriza\u00e7\u00e3o de condi\u00e7\u00f5es:<\/strong> complementando os dados de vibra\u00e7\u00e3o \u2014 muitas vezes fornecendo a primeira indica\u00e7\u00e3o de um defeito num rolamento (o ru\u00eddo pode aumentar antes de a vibra\u00e7\u00e3o na carca\u00e7a o fazer) \u2014 e monitorizando o desgaste das engrenagens atrav\u00e9s das altera\u00e7\u00f5es na qualidade do ru\u00eddo.<\/li>\n<li><strong>Controlo de qualidade:<\/strong> testes de aceita\u00e7\u00e3o de novos equipamentos em rela\u00e7\u00e3o aos limites de ru\u00eddo, verifica\u00e7\u00e3o ap\u00f3s repara\u00e7\u00e3o e controlos de qualidade dos produtos na produ\u00e7\u00e3o.<\/li>\n<li><strong>Conformidade regulamentar:<\/strong> limites de exposi\u00e7\u00e3o profissional (OSHA, diretivas da UE), limites de ru\u00eddo na comunidade e especifica\u00e7\u00f5es do equipamento, apoiados por ferramentas de c\u00e1lculo da dose de exposi\u00e7\u00e3o, tais como o <a href=\"https:\/\/vibromera.eu\/pt\/calculators\/noise-exposure-calculator\/\">Calculadora de Exposi\u00e7\u00e3o ao Ru\u00eddo<\/a>.<\/li>\n<li><strong>Solu\u00e7\u00e3o de problemas:<\/strong> localizar fontes de ru\u00eddo, classificar os fatores que mais contribuem para o ru\u00eddo geral das instala\u00e7\u00f5es e validar o efeito das medidas de redu\u00e7\u00e3o de ru\u00eddo.<\/li>\n<\/ul>\n<p>Como orienta\u00e7\u00e3o geral sobre o que esperar, os n\u00edveis t\u00edpicos ponderados A a 1 m situam-se entre 70 e 85 dBA para motores el\u00e9tricos, entre 75 e 90 dBA para bombas centr\u00edfugas, entre 80 e 100 dBA para ventiladores e sopradores, entre 75 e 95 dBA para caixas de engrenagens, entre 85 e 105 dBA para compressores e entre 95 e 110 dBA para motores a diesel.<\/p>\n<h2>6. O ru\u00eddo como indicador de diagn\u00f3stico<\/h2>\n<p>H\u00e1 dois tipos de altera\u00e7\u00f5es que s\u00e3o importantes quando se analisa a evolu\u00e7\u00e3o de uma m\u00e1quina ao longo do tempo. A <strong>n\u00edvel crescente<\/strong> indica deteriora\u00e7\u00e3o dos rolamentos (rangidos ou guinchos), desgaste das engrenagens (um zumbido cada vez mais intenso), problemas de lubrifica\u00e7\u00e3o (aumento do ru\u00eddo de atrito) ou <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/looseness\/\">folga<\/a> (com vibra\u00e7\u00e3o). A <strong>mudan\u00e7a de car\u00e1ter<\/strong> \u2014 o surgimento de novos tons, a varia\u00e7\u00e3o das frequ\u00eancias, ru\u00eddos intermitentes ou modulados \u2014 \u00e9 igualmente significativo, indicando um problema em desenvolvimento, mesmo que a leitura global em dBA mal tenha variado.<\/p>\n<p>Os m\u00e9todos ac\u00fasticos t\u00eam, de facto, as suas limita\u00e7\u00f5es: um medidor de SPL capta <em>tudo<\/em> na \u00e1rea, pelo que o ru\u00eddo de m\u00e1quinas vizinhas, os reflexos das paredes e o ru\u00eddo de fundo da f\u00e1brica contaminam a leitura de uma forma que um sensor de contacto evita. \u00c9 por isso que, para confirmar uma avaria mec\u00e2nica e, sobretudo, para a corrigir, os engenheiros recorrem \u00e0 medi\u00e7\u00e3o direta da vibra\u00e7\u00e3o. Quando um levantamento de ru\u00eddo sugere um desequil\u00edbrio, um analisador port\u00e1til de dois canais, como o <a href=\"https:\/\/vibromera.eu\/pt\/produto\/balanset-1\/\">Balanset-1A<\/a> \u00e9 poss\u00edvel confirm\u00e1-lo medindo a amplitude e a fase de 1\u00d7 no rolamento e, em seguida, equilibrar o rotor no seu lugar \u2014 isolando a verdadeira fonte mec\u00e2nica que o microfone apenas conseguia sugerir.<\/p>\n<h2>7. Normas de medi\u00e7\u00e3o<\/h2>\n<ul>\n<li><strong>IEC 61672:<\/strong> especifica\u00e7\u00f5es para medidores de n\u00edvel sonoro.<\/li>\n<li><strong>ISO 3744:<\/strong> determina\u00e7\u00e3o da pot\u00eancia sonora a partir da press\u00e3o sonora.<\/li>\n<li><strong>ISO 1680:<\/strong> c\u00f3digo de ensaio de ru\u00eddo para m\u00e1quinas el\u00e9tricas rotativas.<\/li>\n<li><strong>ANSI S12.19:<\/strong> medi\u00e7\u00e3o do ru\u00eddo das m\u00e1quinas.<\/li>\n<\/ul>\n<p>Quando utilizado em conjunto com a vibra\u00e7\u00e3o, o SPL fornece uma vis\u00e3o completa do estado da m\u00e1quina: por vezes, o microfone \u00e9 o primeiro a alertar, o <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/accelerometer\/\">aceler\u00f3metro<\/a> confirma e contextualiza, e, em conjunto, proporcionam uma avalia\u00e7\u00e3o mais completa do que qualquer um deles poderia oferecer sozinho.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/\">\u2190 Voltar ao \u00edndice principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Aprenda sobre o n\u00edvel de press\u00e3o sonora (NPS), uma medi\u00e7\u00e3o do ru\u00eddo ac\u00fastico em decib\u00e9is que indica a emiss\u00e3o de ru\u00eddo de m\u00e1quinas, correlacionada com a vibra\u00e7\u00e3o para uma avalia\u00e7\u00e3o completa das condi\u00e7\u00f5es.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,113],"tags":[],"class_list":["post-244","glossary","type-glossary","status-publish","hentry","category-glossary","category-measurement"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/244","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/244\/revisions"}],"predecessor-version":[{"id":101259,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/244\/revisions\/101259"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/media?parent=244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/categories?post=244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/tags?post=244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}